Artificial floating islands as a tool for the water quality improvement of fishponds

Detalhes bibliográficos
Autor(a) principal: Osti,João Alexandre Saviolo
Data de Publicação: 2021
Outros Autores: Rodrigues,Claudinei José, Carmo,Clovis Ferreira do, Peixoto,Ana Carolina, Schalch,Sergio Henrique Canello, Marcantonio,Adriana Sacioto, França,Fernanda Menezes, Mercante,Cacilda Thais Janson
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Ambiente & Água
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2021000600307
Resumo: Abstract In this study, the ecotechnology artificial floating islands (AFIs), colonized by Eichhornia crassipes, have been tested as a tool for water quality improvement of fishponds. The experiment was carried out in semi-intensive production during the grow-out period of Nile tilapia, comprising one production cycle. It was completely randomized with two treatments (with and without AFIs) and three replications. Temperature, dissolved oxygen, conductivity, pH, turbidity, total dissolved solids (TDS), transparency (Secchi) and concentrations of chlorophyll a (CL a), total nitrogen (TN), total ammonia nitrogen (TAN), total phosphorus (TP) and orthophosphate (PO4 3--P) were analyzed fortnightly in the fishponds. Two groups ordered based on environmental characteristics were formed by applying the Principal Component Analysis (70.68% of explicability). The fishponds with AFIs were assigned to higher values of Secchi and lower values of pH, turbidity, TDS and concentrations of nutrients. On the other hand, the fishponds without AFIs were assigned to the highest values of these variables, except for Secchi. In 30 days, the AFIs showed the lowest concentrations of TP and PO4 3--P, and for CL a, TN and TAN, the differences were recorded after 90 days. The use of AFIs has demonstrated potential to conserve water quality in fishponds, notably for biologically assimilable elements (PO4 3--P and TAN) and for those directly related to eutrophication (P and N). Artificial floating islands should be encouraged for small and medium-sized farmers as tool to improve water quality in fishponds. However, new AFIs coverage rates must be evaluated, as well as the control of hydraulic retention rates.
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spelling Artificial floating islands as a tool for the water quality improvement of fishpondsaquacultureecotechnologyfree-floating aquatic macrophytesAbstract In this study, the ecotechnology artificial floating islands (AFIs), colonized by Eichhornia crassipes, have been tested as a tool for water quality improvement of fishponds. The experiment was carried out in semi-intensive production during the grow-out period of Nile tilapia, comprising one production cycle. It was completely randomized with two treatments (with and without AFIs) and three replications. Temperature, dissolved oxygen, conductivity, pH, turbidity, total dissolved solids (TDS), transparency (Secchi) and concentrations of chlorophyll a (CL a), total nitrogen (TN), total ammonia nitrogen (TAN), total phosphorus (TP) and orthophosphate (PO4 3--P) were analyzed fortnightly in the fishponds. Two groups ordered based on environmental characteristics were formed by applying the Principal Component Analysis (70.68% of explicability). The fishponds with AFIs were assigned to higher values of Secchi and lower values of pH, turbidity, TDS and concentrations of nutrients. On the other hand, the fishponds without AFIs were assigned to the highest values of these variables, except for Secchi. In 30 days, the AFIs showed the lowest concentrations of TP and PO4 3--P, and for CL a, TN and TAN, the differences were recorded after 90 days. The use of AFIs has demonstrated potential to conserve water quality in fishponds, notably for biologically assimilable elements (PO4 3--P and TAN) and for those directly related to eutrophication (P and N). Artificial floating islands should be encouraged for small and medium-sized farmers as tool to improve water quality in fishponds. However, new AFIs coverage rates must be evaluated, as well as the control of hydraulic retention rates.Instituto de Pesquisas Ambientais em Bacias Hidrográficas2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2021000600307Revista Ambiente & Água v.16 n.6 2021reponame:Revista Ambiente & Águainstname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)instacron:IPABHI10.4136/ambi-agua.2734info:eu-repo/semantics/openAccessOsti,João Alexandre SavioloRodrigues,Claudinei JoséCarmo,Clovis Ferreira doPeixoto,Ana CarolinaSchalch,Sergio Henrique CanelloMarcantonio,Adriana SaciotoFrança,Fernanda MenezesMercante,Cacilda Thais Jansoneng2022-01-10T00:00:00Zoai:scielo:S1980-993X2021000600307Revistahttp://www.ambi-agua.net/PUBhttps://old.scielo.br/oai/scielo-oai.php||ambi.agua@gmail.com1980-993X1980-993Xopendoar:2022-01-10T00:00Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)false
dc.title.none.fl_str_mv Artificial floating islands as a tool for the water quality improvement of fishponds
title Artificial floating islands as a tool for the water quality improvement of fishponds
spellingShingle Artificial floating islands as a tool for the water quality improvement of fishponds
Osti,João Alexandre Saviolo
aquaculture
ecotechnology
free-floating aquatic macrophytes
title_short Artificial floating islands as a tool for the water quality improvement of fishponds
title_full Artificial floating islands as a tool for the water quality improvement of fishponds
title_fullStr Artificial floating islands as a tool for the water quality improvement of fishponds
title_full_unstemmed Artificial floating islands as a tool for the water quality improvement of fishponds
title_sort Artificial floating islands as a tool for the water quality improvement of fishponds
author Osti,João Alexandre Saviolo
author_facet Osti,João Alexandre Saviolo
Rodrigues,Claudinei José
Carmo,Clovis Ferreira do
Peixoto,Ana Carolina
Schalch,Sergio Henrique Canello
Marcantonio,Adriana Sacioto
França,Fernanda Menezes
Mercante,Cacilda Thais Janson
author_role author
author2 Rodrigues,Claudinei José
Carmo,Clovis Ferreira do
Peixoto,Ana Carolina
Schalch,Sergio Henrique Canello
Marcantonio,Adriana Sacioto
França,Fernanda Menezes
Mercante,Cacilda Thais Janson
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Osti,João Alexandre Saviolo
Rodrigues,Claudinei José
Carmo,Clovis Ferreira do
Peixoto,Ana Carolina
Schalch,Sergio Henrique Canello
Marcantonio,Adriana Sacioto
França,Fernanda Menezes
Mercante,Cacilda Thais Janson
dc.subject.por.fl_str_mv aquaculture
ecotechnology
free-floating aquatic macrophytes
topic aquaculture
ecotechnology
free-floating aquatic macrophytes
description Abstract In this study, the ecotechnology artificial floating islands (AFIs), colonized by Eichhornia crassipes, have been tested as a tool for water quality improvement of fishponds. The experiment was carried out in semi-intensive production during the grow-out period of Nile tilapia, comprising one production cycle. It was completely randomized with two treatments (with and without AFIs) and three replications. Temperature, dissolved oxygen, conductivity, pH, turbidity, total dissolved solids (TDS), transparency (Secchi) and concentrations of chlorophyll a (CL a), total nitrogen (TN), total ammonia nitrogen (TAN), total phosphorus (TP) and orthophosphate (PO4 3--P) were analyzed fortnightly in the fishponds. Two groups ordered based on environmental characteristics were formed by applying the Principal Component Analysis (70.68% of explicability). The fishponds with AFIs were assigned to higher values of Secchi and lower values of pH, turbidity, TDS and concentrations of nutrients. On the other hand, the fishponds without AFIs were assigned to the highest values of these variables, except for Secchi. In 30 days, the AFIs showed the lowest concentrations of TP and PO4 3--P, and for CL a, TN and TAN, the differences were recorded after 90 days. The use of AFIs has demonstrated potential to conserve water quality in fishponds, notably for biologically assimilable elements (PO4 3--P and TAN) and for those directly related to eutrophication (P and N). Artificial floating islands should be encouraged for small and medium-sized farmers as tool to improve water quality in fishponds. However, new AFIs coverage rates must be evaluated, as well as the control of hydraulic retention rates.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-993X2021000600307
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.4136/ambi-agua.2734
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dc.publisher.none.fl_str_mv Instituto de Pesquisas Ambientais em Bacias Hidrográficas
publisher.none.fl_str_mv Instituto de Pesquisas Ambientais em Bacias Hidrográficas
dc.source.none.fl_str_mv Revista Ambiente & Água v.16 n.6 2021
reponame:Revista Ambiente & Água
instname:Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron:IPABHI
instname_str Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
instacron_str IPABHI
institution IPABHI
reponame_str Revista Ambiente & Água
collection Revista Ambiente & Água
repository.name.fl_str_mv Revista Ambiente & Água - Instituto de Pesquisas Ambientais em Bacias Hidrográficas (IPABHI)
repository.mail.fl_str_mv ||ambi.agua@gmail.com
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